/*
This file is part of the Notesnook project (https://notesnook.com/)

Copyright (C) 2022 Streetwriters (Private) Limited

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

import { EVENTS } from "@notesnook/desktop/events";
import { useEffect, useState } from "react";
import { AppEventManager } from "../common/app-events";
import useMediaQuery from "./use-media-query";

function useSystemTheme() {
  const isDarkMode = useMediaQuery("(prefers-color-scheme: dark)");
  const [systemTheme, setSystemTheme] = useState(isDarkMode ? "dark" : "light");

  useEffect(() => {
    setSystemTheme(isDarkMode ? "dark" : "light");
  }, [isDarkMode]);

  useEffect(() => {
    function onThemeChanged({ theme }) {
      setSystemTheme(theme);
    }
    AppEventManager.subscribe(EVENTS.themeChanged, onThemeChanged);
    return () => {
      AppEventManager.unsubscribe(EVENTS.themeChanged, onThemeChanged);
    };
  }, []);

  return systemTheme === "dark";
}
export default useSystemTheme;
